Construction Engineering & Construction (Operational Projects Subject to Approval; Business Operation Permitted According to Law; Specific Business Scope Subject to Approval Results) General Projects: Sales of building materials; Manufacture and sale of bricks and tiles; Manufacture and sale of cement products; Manufacturing and selling of building blocks; Sales of metal materials; Manufacturing of metal materials; Construction of landscape gardens; Earthwork construction; Overseas contracting projects; Construction of metal doors and windows; Processing of building stones; Sales of steel reinforcement products for construction; Rental of construction machinery and equipment (except for projects not required for operation, business operation is conducted autonomously in accordance with the business license).